Nope new driver made no change. Simply not enough people using vp2/8kx which seem to be the only headsets pushing resolutions high enough to cause issues.
2 Likes
I am using a 8kx with an RTX3080 right now and am considering upgrading to a RTX4090 to get more out of the headset. I’ve read several things regarding these lag issues right now and what I’ve noticed is:
- The issue is related to ALL type of VR headsets when using a RTX4090
- I have read it has something to do with a ’ render pipeline’ being changed by NVIDIA since the 3000 series and therefore could be fixed with newer drivers.
- I have read the Aero suffered from this issue with the 4090 as well, but Varjo managed to fix the issue with a new release of Varjo base: Varjo Base, release version 3.7.2 → back in November 2022 already: November 8, 2022 This release includes improvements and bug fixes to existing features. Fixed an issue that caused image stuttering when using NVIDIA GeForce RTX 4090 graphics card.
- The above gives me the idea, this issue could be fixed with an upgrade of the Pimax Tool as well, despite the current NVIDIA drivers?
- Some people say the issues are solved if they do not use MSI afterburner or similar monitoring tools. Some however say the swear they have never installed any of these tools and even tried clean installs of the machine and are still having the same issue, which they did not see when they had a 3000 card installed.
So what is the truth?
- Should this be fixed by Pimax in a new release of Pitool (I mean, if Varjo can fix it, why can’t Pimax?)
- Should this be fixed by Nvidia (apparantly they are not in a hurry to do so)
- Are there any people who have a 4090 and 8kx that are NOT experiencing these issues currently, or are the issue neglectable and some people just are less sensitive to the issue at hand?
More importantly:
4. Should I buy a 4090 for 2200 Euros and will it improve my experience positively, drastically, compared to sticking with my 3080? Or will I and up majorly dissapointed (not to mention broke of course…).
The 4000 series have been out for a bit now, so I would expect any child diseases to have been solved by NVIDIA, the VR Vendors and the Game developers, but apparantly they are not, as of yet? The fact that Varjo did manage to fix the issue apparantly, gives me hope, but I hear nothing from Pimax on when they will solve this issue, nor from Nvidia. Mostly I just see comments that people should not use Afterburner and all issues will magically dissapear. If the latter is the case, why is not everyone confirming this?
Can some elaborate on this whole case? Much appreciated!
2 Likes
The problem with the Varjo was different. There was massiv stutters all the time.
For the Pimax, there can be with or without lags. It has probably has something to do with the rest of the hardware.
Everything works fine for me, even with Afterburner and other tool, but i use a repeater in the line.
Without repeater i had in simple situations 2-3 Lags (menue etc.), in normal gaming nothing.
I think this affects everyone, but as you mentioned, some people are less sensitve and won’t notice it once Afterburner etc is uninstalled. Secondly those people saying it is ok may be simmers for the most part (wild guess ?). In sims you would notice it even less than in room scale action games as you are barely moving at all. This combined might turn into “I don’t have this issue”. Simmers also tends to be the ones with the most high end VR stuff as well, leaving us room scale folks a minority within the niche.
I don’t have much faith in nvidia putting much effort into this, we are just too few. I really hope Pimax can solve this in their FW or else I’m afraid nothing happens.
Any updates, @PimaxQuorra ? And can you verify if this issue only applies to older gen 8KX ?
Thanks a lot for explaining Varjo was a different issue. What do you mean by a ’ repeater’ exactly?
I am a simmer mostly (racing sims), so although I look around me constantly I do not make a lot of fast head movements normaly, so I might notice less than, I hope. I think it is a big gamble, but I really want to be able to get more out of my headset and either stick with RTX 3080 and change my 8kx for a Varjo Aero (hoping to get better image quality and software support), or stick with 8KX and get RT 4090, get more out of the 8kx that way and be better prepared for a future HMD upgrade, if I manage to get the money. I am thinking the latter will be the better choise, but reading about the issues and (apparantly) they are not being worked on by either NVIDIA or Pimax to be solved, I am thinking I am taking a very big risk throwing away my money…
1 Like
an active amplifier to extend the DP cable.
Thanks, I didn’t know they existed/where needed. So you think this is a factor, maybe the issue having something to do with bandwidth with the cable or something?
get the 4090 with return option and try it. When it’s running, the 8kx shines in new splendor. 
little question, wich version of 8kx ? 1 or 2?
1 Like
Thanks for the advice! I think I will do… so much cash though… ouch…
As a simmer, you are moving your head - that is sufficient.
I agree with you that it might be less noticeable and annoying in racing sims, where you’re moving your head the less.
But as soon as playing Open World sims such as the Truck sims, DCS, FS, or Elite:Dangerous, you’re moving your head all time long. Or think of RPG’s, and if only via vorpX.
Concerning MSI Afterburner:
I need it running to cap the power limit at latest at 350 W. Even though in real gaming service, neither the 4080 nor the 4090 seem to get beyond 300-350 W at max, I simply don’t want a graphics card’s peak to damage my 750 W power supply or anything else. Furthermore, 99% of the reviews guarantueeing this won’t happen in normal gaming mode, didn’t benchmark playing under heavier VR load at all. And in the end it’s only me to blame because I knew of the simple possibility.
1 Like
Serial starts with 2076, I am guessing that is the 2?
1 Like
jupp, no problems with 4090. only Gen1 affected.
That’s even better than! Thanks for your help!
1 Like
For simming, I would go as far as saying it’s liveable and to some degree unnoticeable. The pure performance gain you get from the 4090 in such titles is without a doubt worth it. I recently purchased MSFS2020 and it did not bother me that much to be honest. It’s still there, but it’s nowhere close to room scaled titles.
Is it only v1 having that problem? I thought it concerns all high resolution HMD’s.
nope, for pimax only older hmds
U sure about this ? If this is true, then us early adopters are as good as f*d already… 
When I tried it with a 4080 in the truck sim’s, it was directly noticeable to me and annoying, in the main menu already, in-game while driving even more - it was as if I’d drunk a glass too much
But I admit, after two three hours of trials, I somewhat got used to it a bit. But it still wasn’t comfortable and 100% enjoyable. Considering the GPU’s expensive prices… hmmm… not really satisfying
S*it 
For the 6800/6900 XT and 7900 XT/XTX it seems to be exactly the other way round:
If ever they work, it is said with v1 only … 
Can’t NVIDIA and AMD try to agree upon this ? 